Results 61 to 70 of about 240,998 (304)

Microstructure Design of Steel‐Spinel Composites via Spark Plasma Sintering Process

open access: yesAdvanced Engineering Materials, EarlyView.
This study illustrates how spark plasma sintering at reduced oxygen partial pressure enables controlled formation of steel‐spinel composites through tailored redox reactions and cation exchange. Comparison of the MgO–Fe2O3, steel–(MgO+Cr2O3), and steel–(MgO+Fe2O3) systems shows how oxygen activity and interface chemistry govern spinel formation, phase ...
Mahnaz Mehdizadehlima   +4 more
wiley   +1 more source

Emerging 3D-printed zeolitic gas adsorbents

open access: yesMaterials Science in Additive Manufacturing, 2023
The development of zeolitic adsorbents is an essential subject of interest in the realm of green chemistry, especially in the aspect of gas adsorption. The intrinsic molecular sieving capacity of zeolites allows them to be widely adopted as effective gas adsorbents.
Jiazhao Huang   +5 more
openaire   +1 more source

Production of MgO/TiC Composites From MgO‐C Recyclates Using Spark Plasma Sintering

open access: yesAdvanced Engineering Materials, EarlyView.
Using the spark plasma sintering technique, MgO/TiC composites are manufactured from recycled MgO‐C refractories stemming from the steel production that were mixed with titanium powder. This article shows, how the size of the Ti grains and their distribution in the powder mixture affect the local carbon concentration in TiC.
Jiayan Yu   +3 more
wiley   +1 more source

Adsorption characteristics and controlling factors of marine deep shale gas in southern Sichuan Basin, China

open access: yesJournal of Natural Gas Geoscience, 2022
Deep shale gas (3500–4500 m) is the important replacement field of shale gas production growth in the future China. The research on key parameters of deep shale-gas reservoir is critical to determine its basic geological characteristics and establish a ...
Xuewen Shi   +8 more
doaj   +1 more source

Analysis and theory of gas transport in microporous sol-gel derived ceramic membranes [PDF]

open access: yes, 1995
Sol-gel modification of mesoporous alumina membranes is a very successful technique to improve gas separation performance. Due to the formed microporous top layer, the membranes show activated transport and molecular sieve-like separation factors.
Burggraaf, A.J.   +4 more
core   +3 more sources

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

open access: yesAdvanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir   +5 more
wiley   +1 more source

Log Evaluation Method for Adsorbed Gas Amount in Deep Shale Based on Modified BET Multilayer Adsorption Model

open access: yesCejing jishu
Gas content is a key index of shale reservoir evaluation. The gas content is influenced by the coupling of temperature and pressure. Especially under high formation pressure, it’s difficult to accurately predict the adsorbed gas amount of shale ...
ZHONG Guanghai, LI Yuegang, LI Shengjie
doaj   +1 more source

Photoswitchable Conductive Metal–Organic Frameworks

open access: yesAdvanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu   +5 more
wiley   +1 more source

Investigation of the factors influencing methane adsorption on illite

open access: yesEnergy Science & Engineering, 2019
The molecular simulation method was used to investigate the adsorption behaviors of methane on illite. The effects of several factors on methane adsorption, free gas amounts, and the proportions of absorbed gas in the illite nanopores, including the pore
Jian Xiong   +4 more
doaj   +1 more source

Quantum Drag Forces on a Sphere Moving Through a Rarefied Gas

open access: yes, 2004
As an application of quantum fluid mechanics, we consider the drag force exerted on a sphere by an ultra-dilute gas. Quantum mechanical diffraction scattering theory enters in that regime wherein the mean free path of a molecule in the gas is large ...
A. Widom   +18 more
core   +1 more source

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